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X-51A Waverider
The X-51A Waverider, shown here under the wing of a B-52 Stratofortress, is set to demonstrate hypersonic flight. Powered by a Pratt & Whitney Rocketdyne SJY61 scramjet engine, it is designed to ride on its own shockwave and accelerate to about Mach 6. (U.S. Air Force graphic)

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Tags: aircraft
Photo by:  |  VIRIN: 090717-F-0289B-222.JPG